Nastassja is a supporting character from the anime Moldiver Ex, which is a two-episode spin-off of the original Moldiver OVA series. She is an android and a member of the Machinegal Dolls, a group of female androids created by the antagonist Dr. Machinegal, also known as Professor Amagi. Like the other Dolls, she is named after a famous model or actress. In the story, the Machinegal Dolls serve as Dr. Machinegal's personal army, carrying out his schemes to cause chaos and destruction. Nastassja's role is that of an antagonist, and she engages in combat against the series' heroes, particularly the Ozora siblings. Her abilities are typical of the Dolls: superhuman strength, speed, and durability, augmented by her robotic nature. No detailed background, personality, motivations, or character development are documented in available sources. She does not undergo significant growth or change within the narrative; she remains a consistent enforcer of Dr. Machinegal's will. Her key relationships are with the other Machinegal Dolls, such as Isabelle, Sayuri, Brooke, Vivien, Elizabeth, and Jennifer, as well as with her creator. No specific personal motivations beyond serving her creator are known.